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20121202
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. in the maya city of copan, a jeweler fashioned rare shell and jade for his powerful lord. in mexico, living artisans echo the economy of a vanished civilization. and in teotihuacan, evidence of mass production has now been unearthed. tiny faces of clay reflect the men and women who made them a thousand years ago. on the other side of the world, in the ancient roman city of ostia, huge merchant ships were part of an economy much like our own. and today, the tanners of morocco still practice their ancient craft, living proof that economies have evolved out of the past. everyone who has ever lived has been part of an economic system. iel bote grande...mil pesos! economic systems are simply the ways people produce, distribute and consume things -- everything and anything, from tortillas to stocks and bonds. for 10,000, 10,000 an eighth. today, as in the past, economic systems lie at the heart of how a society is organized. archaeologists search for these systems because they believe economies hold the key to understanding ancient societies. archaeologist william sanders. the economy of any give
the city heat and spend summers at the shore. homer's relatives on both sides had been engaged in shipping and trading for generations. his father, charles savage homer, carried on an import business. his mother, henrietta benson homer, was a watercolorist whose flower pictures were occasionally shown in professional exhibitions. winslow was born in boston in 1836. at the age of 21, after two years of drudgery apprenticeto a commercial lithographer, he vowed he would never have another master and set up his studio at 22 winter street, in a building with publisher m.m. ballou. true to his new england background, homer was forthright and self-reliant. above all, he valued his independence, soon establishing himself as a free-lance illustrator for ballou's pictorial. homer's first important illustration was published in 1857, and within a year, his work began to appear in harper's weekly. his early pictures recorded the ordinary manners and pleasures of american life, reflecting a mood of national self-confidence prior to the civil war. his sketch of the skating pond in central park was publi
of using infiltrators to carry out vandalism and other acts of sabotage. in mexico city, hundreds of people marched through the streets to call for the release of jailed protesters and to denounce police infiltration. >> all this vandalism was caused by infiltrators. has been hard because we have been protesting peacefully. we have been peaceful and as we reject the return of the pri. we are rejecting the return of pena nieto and we do not think it should be like this. many should be released. >> the u.s. senate has unanimously approved a $631 billion military spending bill. the measure includes the accelerations of a withdrawal from afghanistan as well as intensified sanctions on iran. the obama administration has threatened veto minutes over his authority to handle terrorism suspects. in a separate vote, senate republicans defeated a measure to ratify a landmark concatenations treaty banning discrimination against people with disabilities. the final vote was 61-38. five votes short of the two- thirds majority needed for approval. republicans rejected the measure, saying it would make it e
unit was established in atlanta, being that it was the largest city in the southeast, to make sure that those mosquito populations were kept under control around the military bases, so that malaria wouldn't come back in this part of the country. and the way you control it, and the way we did in this country, was you got to get rid of the mosquito vector. that takes a sophisticated... well, it takes an organized community effort. the chinese did that in southern china. many places around the world have had malaria problems-- brazil-- that they've brought under control. not so in africa. eradication efforts are erratic. yellow fever is another mosquito-transmitted virus that the french encountered when they occupied west africa. so the way the french dealt with this was to conduct an ongoing every-four-year campaign to vaccinate every person in every country they occupied. they had groups of doctors and nurses--that's all they did. they just went from village to village on this four year cycle. that way, the most that could happen is you'd have a group of susceptible children, but it
tear gas. clashes spread through the country with muslim brotherhood offices set aflame in other cities. in the latest developments, the top is on the body has called on morsi to suspend his controversial decree. meanwhile, authorities have reportedly set a deadline that expired just minutes ago four demonstrators to leave the area outside the presidential palace. to talk more about the latest news, we are joined by democracy now! correspondent sharif abdel kouddous. can you explain what is happening right now in the streets? >> the presidential guard has deployed at least a dozen tanks around presidential palace just a few miles from where i am in tahrir square. there are reports that marches are being planned, protesters who are against mohamed mursi, his constitutional decree, heading to the presidential palace despite a statement by the presidential guard to clear the area and not allow protesters there. what happened last night was a major escalation of this crisis that began two weeks ago with morsi's constitutional decree. we saw thousands of muslim brotherhood members and their
. "i'll grubstake you. i'll get you groceries. "i'll feed you and i'll grubstake me. "maybe city college will let you use some of their equipment and we'll make a little animated movie." and he made an animated movie on everything that we-- would you like to see it? okay. roll it, lionel. we'll see it right here, gang. right here. ♪ where did the time go? ♪ does anybody, does anybody know? ♪ ♪ when did the day break? ♪ did someone drop it, was it a mistake? ♪ ♪ la, la, la, la la, la, la... did you know that time's different when you move at different speeds, that when you move through space, you change the rate at which you move into the future? well, you can't really notice these differences for everyday speeds, but for really high speeds like for rockets traveling about half the speed of light, these time differences can be noticed. let's take a look at the so-called twin paradox. well, bye. i don't know if i'll see you again. and while the traveling twin experiences weeks... the stay-at-home twin experiences years. you know, i think i'll just sit here and do noth
and these, all flying apart, is awesome. the energy that takes to light up new york city comes about as a result of water pouring over niagara falls. and every water drop has an energy of about this much, four electron volts. electron volts are tiny unit of energy. it's microscopic unit of energy, yeah? but four electron volts per water drop, tnt-- [makes sounds] --you get about 30 electron volts. high-octane gasoline, about 30 electron volts per molecule of combustion, yeah? one atom, u235, fissions, you get about 200 million electron volts of energy. awesome, awesome. an awful lot of energy for one atom, and that kinda changed the world. and so we now talk about the atomic age or more properly the nuclear age because we're talking about an awful lot of energy for just a little bit of matter. it turns out the most common isotopic uranium is uranium-- let me try it over here-- uranium 238. and when 238 catches a neutron, what it does is it turns to u239. u238 emits alpha particles, but 239 emits beta particles. and guess what the 239 does, gang? it turns into an element beyond uraniu
at a unique ranch. >> the overall theme is, wow, it's pretty spectacular. >> then, farming in the city? sound impossible? not for these folks. >> this is my land, but it's everybody's land. >> next, meet a farmer and a chef who make the perfect pair--terally. >> i think pears are great because they're--i like the versatility. >> then, ever wonder how to pick the best summertime produce? we've got the tricks of the trade from a pro. it's all ahead, and it starts now. [moo] >> here in the tiny town of santa margarita, they have a population of only 1,300. but what they lack in size, they more than make up for in history. that's thanks to its legendary occupant, the santa margarita ranch, one of the oldest, continuously operated cattle ranches in california, and one that draws oohs and ahs from both its visitors and owners. >> the overall theme is, wow, it's pretty spectacular. most people that look at it, just go, ooh, blows you asay. >> this was the most idyllic place in the county. and i really do believe, today, it is truly one of the crown jewels of san luis obispo county. >> i don't know t
Search Results 0 to 7 of about 8